The antemortem diagnosis of secondary cardiac involvement by lymphoma remains suboptimal. Prognosis is worse with delayed diagnosis as the tumor burden increases with the multicompartment participation. Chemotherapy may improve survival, but there is a risk of mortality due to treatment-related complications, such as myocardial rupture and fatal arrhythmias. Modified chemotherapy regimens may prevent such complications, but the data are limited. We report the case of a 72-year-old woman diagnosed with diffuse large B-cell lymphoma with cardiac involvement, where early diagnosis prevented cardiac complications from the disease and its treatment as well. The aim of this case report is to highlight the fact that cardiac involvement in lymphoma is frequent and can be easily missed, leading to complications. Treatment requires an individualized approach.

BACKGROUND: Primary cardiac synovial sarcoma is a rare condition with limited treatment options for advanced stages. Surgery and chemotherapy are currently the mainstay treatments; however, survival rates remain low.
METHODS: A 64-year-old woman presenting with symptoms of chest tightness and shortness of breath was found to have an obstructive right atrial mass, along with pulmonary infarction and metastasis. She was ultimately diagnosed with advanced primary cardiac synovial sarcoma. Following surgery, the patient\'s symptoms improved, and she underwent chemotherapy and anti-angiogenic therapy, but unfortunately, her survival time was only 8 months.
CONCLUSIONS:  This case report aims to enhance clinicians\' understanding of the diagnosis and treatment of primary cardiac synovial sarcoma. Enhancing both survival outcomes and quality of life in individuals with primary cardiac synovial sarcoma continues to present a significant challenge.

BACKGROUND: Cardiac papillary fibroelastoma is a rare benign tumor, which is often mistaken for a vegetation. Predominantly asymptomatic, it can cause life-threatening complications. Although rare, mobile papillary fibroelastoma movement between affected valves may hamper valve closure and damage the valve, leading to valvular regurgitation. Endothelial damage increases the risk of developing infective endocarditis. We report a rare case of a highly mobile papillary fibroelastoma originating from the atrial septum touching the mitral valve, leading to mitral regurgitation and, eventually, infective endocarditis.
METHODS: A 26-year-old woman with suspected infective endocarditis was referred to us from a previous hospital after having experienced intermittent fever for a month. Before the fever, she had been experiencing exertional dyspnea. In addition, she had undergone a cesarean section two weeks before this admission. A transthoracic echocardiogram showed a mobile mass originating from the atrial septum touching the mitral valve with severe mitral regurgitation. Computed tomography revealed an occluded right profunda femoris artery with an embolus. Infective endocarditis associated with a mobile vegetation with high embolic risk was diagnosed, and urgent surgery was performed. Following the surgery, examinations revealed papillary fibroelastoma originating from the atrial septum and infective endocarditis of the mitral valve. The histopathological examination confirmed that a mass initially thought to be a mobile vegetation was a papillary fibroelastoma. The postoperative course was uneventful except for pericarditis. There has been no recurrence of infective endocarditis or papillary fibroelastoma.
CONCLUSIONS: The highly mobile papillary fibroelastoma was thought to have caused both chronic mitral regurgitation and infective endocarditis. Mobile papillary fibroelastomas can cause endothelial damage to nearby valves and predispose patients to infective endocarditis.

BACKGROUND: The left partial anomalous pulmonary vein connection is a rare congenital heart disease, especially with intact atrial septum. Now we reported a case of the left superior pulmonary vein drainage to left innominate vein through a vertical vein, and corrected with video assisted thoracoscopy.
METHODS: A-59-years old man diagnosed left anomalous partial pulmonary vein connection with presentation of short breathiness and palpation, and diagnosed with computer tomography pulmonary angiography. The operation was carried out under video assisted thoracoscopy with one manipulation incision and one observational incision, the vertical vein was dissected and anastomosis with left atrial appendage. The patients recovered smoothly and postoperative CTPA showed anastomosis ostium was unobstructed.
CONCLUSIONS: The left lateral thoracotomy and video assisted thoracoscopic surgery is a feasible for correction of left PAPVC with intact interatrial septum without using CPB.

A 61-year-old female presented with right atrial mass during physical examination. Contrast-enhanced left heart echocardiography revealed a mass with the size of 32*23 mm in the right atrium, attached to the atrial septum; there was a certain degree of activity and deformation. MRI showed a mass of about 35*22 mm in the right atrium adjacent to the atrial septum, which was diagnosed with right atrial myxoma. Intraoperative TEE showed that the mass was located in the atrial septum close to the inferior vena cava and spontaneous echo contrast with hyperechoic images within the mass. The lesion was resected under cardiopulmonary bypass. Pathological examination revealed that the filling defect was an atrial septal hematogenous cyst with calcification.

Cardiac tumors are rare. They were found in only 0.001%-0.300% of cases in a relatively recently reported autopsy series. Among cardiac tumors, primary hemangioma accounted for approximately 2.8% of all primary resected tumors, indicating this is a particularly rare benign neoplasm. We present a patient with a 5×3×2 cm cavernous hemangioma, arising from the right atrial roof and occupying the atrial septum and inseparable from the aortic root. We successfully accomplished a complete surgical resection of a cardiac cavernous hemangioma and reconstructed the cardiac atrium by a bovine pericardial patch.

We reported a very rare case, a 59-year-old female whose heart myxoma was present in both atrium, the mass in biatrial was connected to each other at the oval foramen, resembling \"dumbbell-like.\" By means of multimodality echocardiography techniques such as transthoracic echocardiography (TTE), contrast enhanced ultrasound (CEUS), and Real-time three-dimensional transesophageal echocardiography (RT-3D TEE), we have clarified the diagnosis. The patient underwent open-heart surgery to remove the biatrial myxoma which adhered to the oval fossa, with a slightly wider base and smooth lobulated surface. This case demonstrates the importance of multimodality echocardiography in the diagnosis of atypical myxomas.

Percutaneous closure of atrial septal defects is challenging in cases where the device is perpendicular to the septum during the procedure. Hence, different techniques, maneuvers, and auxiliary equipment may be required. We aimed to demonstrate the effectiveness of the FlexCath steerable catheter application in percutaneous closure of atrial septal defect cases in which the device was perpendicular to the septum.
Patients with atrial septal defect who presented to our clinic between January 2017 and December 2020 and were deemed eligible for percutaneous closure were included in the study.
Atrial septal defects of 101 patients out of 110 patients were successfully closed using standard methods. Nine patients in whom it was seen if the device was perpendicular to the interatrial septum were successfully closed with FlexCath steerable catheter support. There was no statistically significant difference between patients in terms of age, gender, floopy rim, and multiple defects. In the group that was treated with FlexCath steerable catheter support, the aortic rim was smaller, and the defect diameter and the size of the atrial septal defects device were larger. The success of the procedure was 100% while using the flexcath steerable catheter in patients with the device perpendicular to the interatrial septum. There were no complica tions during the procedure.
Percutaneous closure with FlexCath steerable catheter support in difficult cases with atrial septal defects was effective in those with the atrial septal closure device being per pendicular to the interatrial septum and was performed easily without any safety issues.

Lipomatous Hypertrophy of the Interatrial Septum (LHIS) is an unusual condition usually found as an incidental finding on echocardiography. It can create a mass-like bulge typically sparing the fossa ovalis. We describe a 73-year-old overweight Cypriot woman, who visited our clinic in November 2018 and was complaining of dyspnea on exertion, chest tightness, and two episodes of paroxysmal atrial fibrillation for the last eight months. A big sessile mass was detected in the interatrial septum measuring 3.7×4.7 cm during transoesophageal echocardiography. The patient underwent resection of the mass and pericardial patch reconstruction of the defect with significant improvement of her clinical status during the follow-up period. The histopathological analysis suggested LHIS. In patients with persistent cardiac symptoms, a prompt resection is a useful option, although surgery is generally considered unnecessary in this clinical setting. Preprint of this article is available on: https://www.authorea.com/users/380290/articles/496351-a-patient-with-chronic-dyspnea-and-episodes-of-paroxysmal-atrial-fibrillation-in-the-presence-of-a-right-atrial-mass.

A 64-year-old female underwent a computed tomography (CT) examination of the chest because of pneumonia, which revealed lipomatous hypertrophy of the atrial septum. During medical treatment for pneumonia, venous thrombus of the superior vena cava occurred and then disappeared following apixaban administration. The patient refused surgery at that time, thus follow-up examinations include CT scans were conducted at the outpatient clinic. Two years later, the tumor became larger, and this time she accepted surgery. Under total cardiopulmonary bypass with beating heart a 5.0×3.5 cm tumor was resected. Because of its location very close to superior vena cava, upper area of the right atrium was augmented using a bovine pericardium. Following surgery, sick sinus syndrome developed and pacemaker implantation was performed. Thereafter, the patient had a smooth recovery and no recurrence is noted one year since.